WorksheetsRadioactive Decay
Total questions: 15
Worksheet time: 2hrs 20mins
Name
Class
Date
1.
Uranium-238 decays into Thorium-234 by emitting .........
a)
an alpha particle
b)
a beta particle
c)
gamma rays
d)
visible light
2.
A helium nucleus with two protons and two neutrons is called a(n) ____.
a)
alpha particle
b)
electroscope
c)
beta particle
d)
gamma ray
3.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma
d)
none
4.
If we start off with element 24X50 after an alpha decay we get another element Y that looks like
a)
22Y50
b)
22Y46
c)
20Y48
d)
26Y54
5.
If we start off with element 24X50 after an beta decay we get another element Y that looks like
a)
23Y50
b)
22Y46
c)
25Y50
d)
24Y50
6.
Solve this equation for alpha decay.
85209At = ___ + 24He
85209At = ___ + 24He
a)
83205Bi
b)
86209Rn
c)
81207Tl
d)
85208At
7.
Balance the following equation:
146C --> 0-1e + ________
146C --> 0-1e + ________
a)
145B
b)
146C
c)
147N
d)
42He
8.
Solve this equation for alpha decay.
85209At = ___ + 24He
85209At = ___ + 24He
a)
83205Bi
b)
86209Rn
c)
81207Tl
d)
85208At
9.
Gamma rays have
a)
no mass
b)
a huge mass
c)
a small mass
d)
an average mass
10.
Has a mass of 0 and a charge of 0
a)
Alpha
b)
Beta
c)
Gamma
11.
Has a moderate penetrating power. It can penetrate 4 mm into body tissue and can be stopped by metal foil.
a)
Alpha
b)
Beta
c)
Gamma
12.
Electromagnetic radiation made of high-energy photons.
a)
Alpha
b)
Beta
c)
Gamma
13.
Has the lowest penetrating power. Can only penetrate 0.05 mm into the body and can be stopped by a piece of paper or clothing.
a)
Alpha
b)
Beta
c)
Gamma
14.
Has the highest penetrating power. Can penetrate our body. Even several cm thick of lead or several meters thick of concrete cannot stop all of it.
a)
Alpha
b)
Beta
c)
Gamma
15.
This term refers to the amount of time it takes for half of a certain substance to undergo radioactive decay.
a)
alpha life
b)
beta life
c)
radioactivity time
d)
half-life
100 %
